AS10193 BUSANBANK-AS-KR BUSANBANK

BUSANBANK-AS-KR is the enterprise autonomous system of Busan Bank, the regional

commercial bank serving Busan and South Gyeongsang province and the founding

subsidiary of BNK Financial Group.

What it's used for

• Reaching the bank's own public-facing services: internet and mobile banking front ends, the card and payment gateways that acquirers and merchants talk to, corporate mail, and the encrypted links between branches, the data centre and interbank clearing networks.

Notable

The evidence points squarely at enterprise, not provider. RIS sees **2

announced IPv4 prefixes, 512 addresses in total, no IPv6, and 2 observed

neighbours**. Two upstreams and half a /23 of space is a dual-homed corporate

edge: the bank runs its own ASN so its public addresses survive changing

carriers, and buys transit from two of them so no single ISP failure closes

online banking. A network that resold connectivity would show a peer count in

the hundreds; there is nothing wholesale about two.

The two prefixes come from different parents (203.239.60.0/24 and

119.195.116.0/24) — an older KRNIC-era assignment alongside a newer one — which

is the normal accretion pattern for a long-lived Korean institution rather than

any sign of address trading. Both are announced by the bank itself.

Interesting

Busan Bank's ASN was registered in the same run as several other Korean financial

institutions; Kiwoom Securities sits two numbers earlier at

[AS10192](https://asn.ipinfo.app/AS10192) and Kookmin Bank at

[AS10196](https://asn.ipinfo.app/AS10196). The address footprint is small because

retail banking traffic terminates on a handful of load balancers, not on

customer-facing address pools.